12404221040 has 40 divisors (see below), whose sum is σ = 29834295840. Its totient is φ = 4790594816.

The previous prime is 12404221001. The next prime is 12404221043. The reversal of 12404221040 is 4012240421.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12404221043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2671004 + ... + 2675643.

It is an arithmetic number, because the mean of its divisors is an integer number (745857396).

Almost surely, 2^12404221040 is an apocalyptic number.

12404221040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12404221040 is an abundant number, since it is smaller than the sum of its proper divisors (17430074800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12404221040 is a wasteful number, since it uses less digits than its factorization.

12404221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5346689 (or 5346683 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12404221040 its reverse (4012240421), we get a palindrome (16416461461).

The spelling of 12404221040 in words is "twelve billion, four hundred four million, two hundred twenty-one thousand, forty".